In the late 1940s, Pascal Paddock, one of the forefathers of the modern day pool industry, invented the first fiberglass pool, which was sold in four pieces. The Paddock fiberglass pool laid the foundation for the one-piece fiberglass pool that would debut in the 1950s. As fiberglass became more mainstream in the following decades, the pool industry continued to evolve as well, including the introduction of the first pools built with raised bond beams, spillover spas and vanishing edges in the 1990s. Today, the fastest growing segment of the swimming pool industry in America and Canada is in the fiberglass swimming pool structure. Many other countries have seen the fiberglass swimming pool become the number one choice for residential construction with 55 percent of the market shifting to fiberglass.